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March 21, 2026Clinical ophthalmologyOpen Access

Comparison of Reproducibility and Repeatability of Corneal Topography Measured by ATLAS 500 and ATLAS 9000 in Average Patient Population

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Authors

PTPedro Tañá-RiveroPOPaz Orts-VilaPTPedro Tañá-Sanz

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Overview

Observational study compares measurement precision of two corneal topographers, suggesting improved reliability of ATLAS 500.

Key Points

  • To compare the repeatability and reproducibility of two corneal topographers, ATLAS 500 and ATLAS 9000, in measuring corneal parameters.
  • Conducted a prospective observational study with 100 eyes measuring various corneal profiles.
  • Two operators performed randomized, repeated measurements using both topographers.
  • Parameters assessed included corneal power, astigmatism, white-to-white distance, and aberrations.
  • ATLAS 500 demonstrated equal or superior repeatability and reproducibility compared to ATLAS 9000.
  • Lower standard deviations were reported for central corneal power and astigmatism with ATLAS 500.
  • Keratoconus classification showed moderate agreement (κ = 0.50) between devices.

Cite This Study

Tañá-Rivero et al. (2026) studied this question.

synapsesocial.com/papers/69be37f16e48c4981c67802dhttps://doi.org/10.2147/opth.s581736
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